Loom shuttle



J n- 2, 1951 G. A. MILLER 2,536,653

LOOM SHUTTLE Filed Oct. 25, 1947 Patented Jan. 2, 1951 UNITED STATES:

OFHCE LooM.

Gates-AW Mi Edinburgh, S limination OctoberZE, 1947, Sci

snUrmLg I ;1s well known, in some types of shuttles, to

the yarn as .aco'p Without anyv internalsupportpratmost bna thinpapertube, which often h is only avshort tube at the base. Such copsfare hereinafter referred to as the kindIhavinghlitltle orJno internalsupport, Us ally; the'tongne" oil the. shuttle onto. which the. cop is subseqnently placed is a longitudinally. split' oiidivided taperedpin, thev parts, orfo'ne paft otwhih i'st outwardly sprung onl'bowed to, grip 'in the central hole of the cop types of cop of the kindhavinglittle or no internal support, there isTdiflicrilty. in avoiding breakage of' the. cop aufingitse; d ie to the inertia of the yarn and thefshoclgs ofia'cc'elera tion and deceleration to'vvh'ich the shuttle is'v submitted in the loom, and diieto the fact that the tongue does not support. the cop for entire length and especially the ends "are ufieup ported. Thewinding of the yarn th' 'fore"be comes looseand the copy loses itssh and the yarn does not draw off properlyfi' V The object of the invention is an improved construction of tongue whe eby 1311 top be better held throughout its entire ngth against" the disintegrating forces of accleratior'iand oe ela t According to the invention an improved tonguev kind having little 'or no "internal s pport com? prises tapered centre pin of partf-circular'section having atleast one longitudinal snbstan tially fl at portionfand' a plurality of transverse corrugations on at least part oi the rest of its iph Y, a sleeve closely fitting on the pin,

haying a plain tapered external surface and "be; ing rotatable'relative to the .pin, means for holdingthe sleeve against axial ms emem off the pin, said sleeve having at least onelongitudinal th "csrxueai on coincident withieaoh" siibst nti ally flat'jpoi f tion on the pin and thus" form in tapered the'cop' easily, and so that "the 's' l'e eve and pin may be relatively turned whereby the eo rrugal 919 each apart ar}? a ai st t b r o h COP?" 5 1 expression "siib'starit'ially flat portion here n 11 i s pa e? fora loom shuttle fonuse witfia cop of the the P w th f ap ture U s of the pinprotrude between the edges oi w ace ompanying' drawings:

Fi per pec v ew h m o improved tong'u'efor loom shuttles made m c c9rda ne.e with one example of this invention.

"'Figl 2jis a similar perspective viewof'the sleeve pg 011 for, use with the pin shown'in Fig. 1f.

gsf. 3'55- ant 13B arecross sectional views 0 of Eig:'1 drawnior convenience't .Wg Q WP I P Q i Q ew 021? at t modified construction made i v a e wth the invention.

a sectional view on line 5-5 of Fig. (1.

As" shown inFigs. 1; 2, SAand 3B,"the proved tongue comprises a tapered centrepin of "slightlyr'noi'e than semi-circular cross section 29 with r und d longitudinal edges and. formed'witli' of notches b across one corner of the cross sectionas' can be seen from Figs: 3A"and 3131' r pinis 'adapted to be fitted a tapered ng steel sleeve (3' formed on one face with};

Pdih'a'l "aperture (1 of" slightly less than; 5;"

semiciiolewhich' terminates short of each of the sleeve leaving end portions 01' andd to embrace mpletely the ends of the pin. The longitiidinal substantially fiat face portion of the deeme 1 an the t r a s c i that'when'in"register asshow'n' in Fig; 3A the" di al edges of the aperture are'sub stan- 11th! said substantially flat porw. e 'ha's a ase '1 1 1 1419 fWhiQfi r a m ily 'e'f' a "S r g h cered ie k 1 loc n n 1s me fi hs ea e an overhanging end Z as shown in Figl' l 49k rid bitin for w an n m o ch bstan'tiall'y following the outer periphery of the I o 1. is attached to abottotn plate 9 wh ch forms a'flange to'th'e sleeve and which ha a projection an'adjacen't flat-edged portion iii", aisecond -flat'-- e'c igecl portion m substantially 17' I 'th 11 t v x a can be fi ted to th R 11 f' c th and f t epprinei t $1 913% wn e e n re hl nd te ing s s'oas to" retain thesle'eve against axial m ver'rient'- @The sleeve may be turned through h r to'the position shown in Fig. 3A

turein m th rcul r and o in lude 6W "Ch mayj'either beplanar or concave edge and with the inner face of the inner main spring below the end I when the parts are in the position shown in Fig. 313 so as to determine such relative cop-holding position of the parts.

In use the sleeve can be turned into the relative position shown in Fig. 3A to receive the cop and then by applying finger pressure to the fingerplate n the sleeve can be turned to bring it into the relative position shown in Fig. 3B when the notched portion of the pin will project from between the longitudinal edges of the aperture in the sleeve and will grip in the inner portions of the cop. In the position shown in Fig. 3A the spring will tend to hold the parts in position by engaging with the second fiat-edged portion m of the bottom plate g. The finger extension 11, by engaging the edge of the spring will limit rotational movement of the sleeve.

To remove the cop from the spindle or what remains of an empty cop the operation is reversed to bring the sleeve into the relative position shown in Fig. 3A so that the notches no longer present any obstacle to removal of the cop or any part thereof and so that the longitudinal substantially fiat portion e appears between the edges of the aperture.

In the modifications shown in Figs. 4 and 5 the notches of the example shown in Figs. 1, 3A and 3B are replaced by longitudinally undulating corrugations b in the pin 0. extending around the whole of the arcuate peripheral wall of the pin between the edges of the fiat. This construction operates in exactly the same manner and in com bination with the same sleeve as shown in Fig. 2 but obviously the corrugations when made according to Fig. 1 can be deeper without prejudicing the strength of the pin.

In a further modification of the form shown in Figs. 4 and 5 the corrugations could be so arranged as to fade out towards one edge whilst extending substantially around the peripheral wall of the pin between the edges of the flat. The corrugations shown in Fig. 1 may be made by cutting or grinding with a cylindrical tool. Obviously all corners would be rounded in the finished article.

t is also to be observed that while the construction of Figs. 1, 2, 3A and 3B require only a 90 relative rotation between the two positions the construction of Fig. requires a rotation of 180".

I claim:

1. An improved tongue for a, loom shuttle for use with a cop of the kind having little or no internal support and comprising a tapered center pin of part-circular section having at least one longitudinal substantially flat portion and a plurality of transverse corrugations on at least part of the rest of its periphery, a sleeve closely fitting on the pin, having a plain tapered external surface and being rotatable relative to the pin, means for holding the sleeve against axial movement off the pin, said sleeve having at least one longitudinal aperture corresponding to each said longitudinal substantially fiat portion on the pin whereby the sleeve may be positioned so that the sleeve masks the corrugations on the pin with eacha'perture coincident with each of said substantially fiat portions on the pin and thus forms a plain tapered tongue of part-circular cross section to receive the cop easily, and so that the sleeve and pin may be relatively turned whereby the corrugations of the pin protrude between the edges of each aperture in the sleeveto engage,

use with a cop of the kind having little or no internal support and comprising a base part with a tapered center pin projecting therefrom and of part-circular section having at least one longitudinal substantially flat portion and a plurality of transverse corrugations on at least part of the rest of its periphery, a sleeve closely fitting on the pin having a bottom plate flange and a plain tapered external surface and being rotatable relative to the pin, a retaining spring mounted on the base part and adapted to be detachably engaged with the said bottom plate flange on the sleeve to hold the sleeve against axial movement oi? the pin while permitting at least partial rotation, said sleeve having at least one longitudinal aperture corresponding to each said longitudinal substantially fiat portion on the pin whereby the sleeve may be positioned so that the sleeve masks the corrugations on the pin with each aperture coincident with each said substantially flat portion on the pin and thus forms a plain tapered tongue of part-circular cross section to receive the cop easily, and so that the sleeve and pin may be relatively turned whereby the corrugations of the pin protrude between the edges of each aperture in the sleeve to engage with and grip against the bore of the cop.

3. An improved tongue according to claim 2 characterized in that the retaining spring and :50

bottom plate flange on the sleeve have complementary engaging formations to locate and hold the sleeve in its operative cop-holding position on the pin.

4. An improved tongue according to claim 3 tion of the base of the cop for the purpose of rotational adjustment of the sleeve on the pin.

6. An improved tongue for a loom shuttle for use with a cop of the kind having little or no internal support and comprising a base part with a tapered center pin projecting therefrom and of slightly more than semi-circular cross section with a longitudinal substantially flat portion rounded longitudinal edges thereto and a plurality of notches across one corner of the cross section, a tapered sleeve closely fitting on the pin and being rotatable thereon, said sleeve having a plain tapered external surface and a longitudinal aperture of slightly less than a semi-circle extending for nearly its full length leaving end portions to embrace completely the ends of the pin, a bottom plate attached to the lower end of the sleeve and forming a flange thereto, said bottom plate having a locating projection, a first locating fiat edge portion adjacent thereto and a second locating flat edge portion substantially at right angles to the first and an inclined finger extension for the purpose of rotational adjustment of the sleeve on the pin, and a retaining leaf spring secured to the base part of the pin having a bent-over end portion adapted to be normally located over the bottom plate of the sleeve so as to retain the sleeve against axial movement of the pin, the inner face and edges of the spring being adapted to cooperate by engagement with the projection, an inclined extension andthe flat edge portions of the bottom plate of the sleeve to locate and hold the sleeve in either its cop-holding or cop-receiving positions on the pin.

7. An improved tongue for a loom shuttle for use with a cop of the kind having little or no internal support and comprising a base part with a tapered center pin projecting therefrom and of slightly more than semi-circular cross section with a longitudinal substantially flat portion rounded longitudinal edges thereto and a plurality of longitudinally undulating corrugations extending around the arcuate peripheral wall or the pin, a tapered sleeve closely fitting on the pin and being rotatable thereon, said sleeve having a plain tapered external surface and a longi tudinal aperture of slightly less than a semicircle extending for nearly its full length having end portions to embrace completely the ends of the pin, a bottom plateattached to the lower end of the sleeve and forming a flange thereto, said bottom plate having a locating projection, a first locating fiat edge portion adjacent thereto and a second locating flat edge portion substantially at right angles to the first and an inclined finger extension for the purpose of rotational adjustment of the sleeve on the pin, and a retaining leaf REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 160,001 Blanding Feb. 23, 1875 874,331 Guldemann Dec. 1'7, 190'] FOREIGN PATENTS Number Country Date 462,342 Great Britain Mar. 8, 1937 

